Game over
From Tardis Wiki, the free Doctor Who reference
When he saw the Twelfth Doctor getting launched into the air in the Land of Ooo, B.A. Baracus remarked "Game over, Who!". (WC: New Adventures Await! [+]Loading...["New Adventures Await! (webcast)"])
When the Fourteenth Doctor challenged the Toymaker to a final game, the Toymaker wanted to play it with the next Doctor, and turned the gun on the Doctor, something the Doctor thought would be "Game over!". (PROSE: The Doctor's Busiest Day [+]Loading...{"page":"8","1":"The Doctor's Busiest Day (short story)"})